[Nick C]

For some reason at first I thought you just had top pair on the river, and at that moment I thought the decision was close versus your LAG opponent. (Although the action suggests he in fact had a crappy draw, and a crappy draw just got there, this is also the kind of super-scary river card this Villain might love to bluff.)

Now that I realize you have a one-card ass-end straight, the call seems easier. At least sometimes when Villain isn't bluffing you'll still chop with him.